Improvement of petroleum contaminated clayey soil by carbon fiber polymeric composite and diatomic soil

Document Type : Original Research

Authors
A. Falamaki 1
S. Zahmatkesh 2
M. Mehravaran 3
H. Ghodrat 3
1 Associate Professor, Department of Civil eng., Payame Noor University
2 Associate Professor, Department of Chemistry, Payame Noor University
3 Graduate Student, Payame Noor University
10.22034/jaert.1.1.3
Abstract
The overarching goal of this research is to use polymeric composites enriched with diatomic soil to improve petroleum-contaminated clayey soil. The effect of petroleum on the geotechnical properties of clayey soil was investigated in the laboratory in the first stage using uniaxial, direct shear, and permeability tests. The polymeric composite material was then created and mixed with the diatomic soil. The geotechnical properties of petroleum-contaminated clayey soil were studied using a polymeric composite material mixed with diatomic soil (PCD). Petroleum reduced the shear resistance, internal friction angle, and uniaxial resistance of the clay for contamination percentages ranging from 0% to 12%. Whereas 12 percent petroleum content causes the greatest changes in soil mechanical resistance. According to the results of the direct shear test, adding 5.5 percent PCD increases the shear resistance of the base material and contaminated base material to average values of 32 and 48 percent, respectively. Furthermore, the results of the petroleum permeability test show that adding 5.5 percent PCD reduces soil permeability. The results show that the improved clay by PCD can be used as a liner for the base of petroleum reservoirs.

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